docs-nodejs/domain.html

<!DOCTYPE html><html lang="en"><head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>Domain | Node.js v12.10.0 Documentation</title>
  <link rel="stylesheet" href="data:text/css;base64,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">
  <link rel="stylesheet" href="data:text/css;base64,/*--------------------- Layout and Typography ----------------------------*/
html {
  font-size: 1rem;
  overflow-wrap: break-word;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-font-variant-ligatures: none;
          font-variant-ligatures: none;
}

* {
  box-sizing: border-box;
}

body {
  font-family: "Lato", "Lucida Grande", "Lucida Sans Unicode", "Lucida Sans", Verdana, Tahoma, sans-serif;
  margin: 0;
  padding: 0;
  color: #333;
  background: #fff;
}

h1 { font-size: 2.5rem }
h2 { font-size: 2rem }
h3 { font-size: 1.75rem }
h4 { font-size: 1.5rem }
h5 { font-size: 1.25rem }
h6 { font-size: 1rem }

h1, h2, h3, h4, h5, h6 {
  margin: 1.5rem 0 1rem;
  text-rendering: optimizeLegibility;
  font-weight: 700;
  position: relative;
}

pre, tt, code, .pre, span.type, a.type {
  font-family: SFMono-Regular, Menlo, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: .9em;
}

#content {
  position: relative;
}

a, a:link, a:active {
  color: #43853d;
  text-decoration: none;
  border-radius: 2px;
  padding: 1px 3px;
}

a:hover, a:focus {
  color: #fff;
  background-color: #43853d;
  outline: none;
}

strong {
  font-weight: 700;
}

code a:hover {
  background: none;
}

em code {
  font-style: normal;
}

#changelog #gtoc {
  display: none;
}

#gtoc {
  margin-top: .5rem;
  margin-bottom: 1rem;
}

#gtoc ul {
  list-style: none;
  margin-left: 0;
  line-height: 1.5rem;
}

#gtoc > ul > li {
  display: inline;
  border-right: 1px #000 solid;
  margin-right: 0.4rem;
  padding-right: 0.4rem;
}

#gtoc > ul > li:last-child {
  border-right: none;
  margin-right: 0;
  padding-right: 0;
}

li.version-picker {
  position: relative;
}

li.version-picker:hover > a {
  border-radius: 2px 2px 0 0;
}

li.version-picker:hover > ol {
  display: block;
  z-index: 1;
}

li.version-picker a span {
  font-size: .7rem;
}

ol.version-picker {
  background: #fff;
  border: 1px #43853d solid;
  border-radius: 0 0 2px 2px;
  display: none;
  list-style: none;
  position: absolute;
  right: 0;
  top: 1.25rem;
  width: 100%;
}

#gtoc ol.version-picker li {
  display: block;
  border-right: 0;
  margin-right: 0;
}

ol.version-picker li a {
  border-radius: 0;
  display: block;
  margin: 0;
  padding: .1rem;
  padding-left: 1rem;
}

ol.version-picker li:last-child a {
  border-bottom-right-radius: 1px;
  border-bottom-left-radius: 1px;
}

.line {
  width: calc(100% - 1rem);
  display: block;
  padding-bottom: 1px;
}

.api_stability {
  color: white !important;
  margin: 0 0 1rem 0;
  font-family: "Lato", "Lucida Grande", "Lucida Sans Unicode", "Lucida Sans", Verdana, Tahoma, sans-serif;
  padding: 1rem;
  line-height: 1.5;
}

.api_stability * {
  color: white !important;
}

.api_stability a {
  text-decoration: underline;
}

.api_stability a:hover, .api_stability a:active, .api_stability a:focus {
  background: rgba(255, 255, 255, .4);
}

.api_stability a code {
  background: none;
}

.api_stability_0 {
  background-color: #D60027;
}

.api_stability_1 {
  background-color: #EC5315;
}

.api_stability_2 {
  background-color: #4EBA0F;
}

.api_metadata {
  font-size: .85rem;
  margin-bottom: 1rem;
}

.api_metadata span {
  margin-right: 1rem;
}

.api_metadata span:last-child {
  margin-right: 0px;
}

ul.plain {
  list-style: none;
}

abbr {
  border-bottom: 1px dotted #454545;
}

p {
  text-rendering: optimizeLegibility;
  margin: 0 0 1.125rem 0;
  line-height: 1.5;
}

#apicontent > *:last-child {
  margin-bottom: 0;
  padding-bottom: 2rem;
}

table {
  border-collapse: collapse;
  margin: 0 0 1.5rem 0;
}

th, td {
  border: 1px solid #aaa;
  padding: .75rem 1rem .75rem 1rem;
  vertical-align: top;
}

th {
  text-align:left;
}

ol, ul, dl {
  margin: 0 0 .6rem 0;
  padding: 0;
}

ol ul, ol ol, ol dl, ul ul, ul ol, ul dl, dl ul, dl ol, dl dl {
  margin-bottom: 0;
}

ul, ol {
  margin-left: 2rem;
}

dl dt {
  position: relative;
  margin: 1.5rem 0 0;
}

dl dd {
  position: relative;
  margin: 0 1rem 0;
}

dd + dt.pre {
  margin-top: 1.6rem;
}

#apicontent {
  padding-top: 1rem;
}

#apicontent .line {
  width: calc(50% - 1rem);
  margin: 1rem 1rem .95rem;
  background-color: #ccc;
}

h2 + h2 {
  margin: 0 0 .5rem;
}

h3 + h3 {
  margin: 0 0 .5rem;
}

h2, h3, h4, h5 {
  position: relative;
  padding-right: 40px;
}

.srclink {
  float: right;
  font-size: smaller;
}

h1 span, h2 span, h3 span, h4 span {
  position: absolute;
  display: block;
  top: 0;
  right: 0;
}

h1 span:hover, h2 span:hover, h3 span:hover, h4 span:hover {
  opacity: 1;
}

h1 span a, h2 span a, h3 span a, h4 span a {
  color: #000;
  text-decoration: none;
  font-weight: bold;
}

pre, tt, code {
  line-height: 1.5rem;
  margin: 0; padding: 0;
}

.pre {
  line-height: 1.5rem;
}

pre {
  padding: 1rem;
  vertical-align: top;
  background: #f2f2f2;
  margin: 1rem;
  overflow-x: auto;
}

pre > code {
  padding: 0;
}

pre + h3 {
  margin-top: 2.225rem;
}

code.pre {
  white-space: pre;
}

#intro {
  margin-top: 1.25rem;
  margin-left: 1rem;
}

#intro a {
  color: #ddd;
  font-weight: bold;
}

hr {
  background: none;
  border: medium none;
  border-bottom: 1px solid #7a7a7a;
  margin: 0 0 1rem 0;
}

#toc h2 {
  margin-top: 0;
  margin: 1.5rem 0;
}

#toc p {
  margin: 0;
}

#toc ul a {
  text-decoration:none;
}

#toc ul li {
  margin-bottom: .666rem;
  list-style: square outside;
}

#toc li > ul {
  margin-top: .666rem;
}

#toc .stability_0::after {
  background-color: #d50027;
  color: #fff;
  content: "deprecated";
  margin-left: .25rem;
  padding: 1px 3px;
  border-radius: 3px;
}

#apicontent li {
  margin-bottom: .5rem;
}

#apicontent li:last-child {
  margin-bottom: 0;
}

tt, code {
  color: #040404;
  background-color: #f2f2f2;
  border-radius: 2px;
  padding: 1px 3px;
}

.api_stability code {
  background: rgba(0, 0, 0, .1);
}

a code {
  color: inherit;
  background: inherit;
  padding: 0;
}

.type {
  line-height: 1.5rem;
}

#column1.interior {
  margin-left: 234px;
  padding: 0 2rem;
  -webkit-padding-start: 1.5rem;
}

#column2.interior {
  width: 234px;
  background: #333;
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  overflow-x: hidden;
  overflow-y: scroll;
}

#column2 ul {
  list-style: none;
  margin: .9rem 0 .5rem;
  background: #333;
}

#column2 > :first-child {
  margin: 1.25rem;
  font-size: 1.5rem;
}

#column2 > ul:nth-child(2) {
  margin: 1.25rem 0 .5rem;
}

#column2 > ul:last-child {
  margin: .9rem 0 1.25rem;
}

#column2 ul li {
  padding-left: 1.25rem;
  margin-bottom: .5rem;
  padding-bottom: .5rem;
}

#column2 .line {
  margin: 0 .5rem;
  background-color: #707070;
}

#column2 ul li:last-child {
  margin-bottom: 0;
}

#column2 ul li a {
  color: #ccc;
  border-radius: 0;
}

#column2 ul li a.active, #column2 ul li a.active:hover,
#column2 ul li a.active:focus {
  color: #43853d;
  border-radius: 0;
  border-bottom: 1px solid #43853d;
  background: none;
}

#intro a:hover, #intro a:focus,
#column2 ul li a:hover, #column2 ul li a:focus {
  color: #fff;
  background: none;
}

span > .mark, span > .mark:visited {
  color: #707070;
  position: absolute;
  top: 0px;
  right: 0px;
}

span > .mark:hover, span > .mark:focus, span > .mark:active {
  color: #43853d;
  background: none;
}

th > *:last-child, td > *:last-child {
  margin-bottom: 0;
}

.changelog > summary {
  margin: .5rem 0;
  padding: .5rem 0;
  cursor: pointer;
}

/* simpler clearfix */
.clearfix:after {
  content: ".";
  display: block;
  height: 0;
  clear: both;
  visibility: hidden;
}

.github_icon {
  vertical-align: middle;
  margin: -2px 3px 0 0;
}

@media only screen and (max-width: 1024px) {
  #content {
    overflow: visible;
  }
  #column1.interior {
    margin-left: 0;
    padding-left: .5rem;
    padding-right: .5rem;
    width: auto;
    overflow-y: visible;
  }
  #column2 {
    display: none;
  }
}

@media print {
  html {
    height: auto;
    font-size: 0.75em;
  }
  #column2.interior {
    display: none;
  }
  #column1.interior {
    margin-left: 0px;
    padding: 0px;
    overflow-y: auto;
  }
  .api_metadata,
  #toc,
  .srclink,
  #gtoc,
  .mark {
    display: none;
  }
  h1 {
    font-size: 2rem;
  }
  h2 {
    font-size: 1.75rem;
  }
  h3 {
    font-size: 1.5rem;
  }
  h4 {
    font-size: 1.3rem;
  }
  h5 {
    font-size: 1.2rem;
  }
  h6 {
    font-size: 1.1rem;
  }
  .api_stability {
    display: inline-block;
  }
  .api_stability a {
    text-decoration: none;
  }
  a {
    color: inherit;
  }
  #apicontent {
    overflow: hidden;
  }
}
">
  <link rel="stylesheet" href="data:text/css;base64,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">
  <link rel="canonical" href="https://nodejs.org/api/domain.html">
</head>
<body class="alt apidoc" id="api-section-domain">
  <div id="content" class="clearfix">
    <div id="column2" class="interior">
      <div id="intro" class="interior">
        <a href="https://nodejs.org/" title="Go back to the home page">
          Node.js
        </a>
      </div>
      <ul>
<li><a href="https://nodejs.org/api/documentation.html" class="nav-documentation">About these Docs</a></li>
<li><a href="https://nodejs.org/api/synopsis.html" class="nav-synopsis">Usage &amp; Example</a></li>
</ul>
<div class="line"></div>
<ul>
<li><a href="https://nodejs.org/api/assert.html" class="nav-assert">Assertion Testing</a></li>
<li><a href="https://nodejs.org/api/async_hooks.html" class="nav-async_hooks">Async Hooks</a></li>
<li><a href="https://nodejs.org/api/buffer.html" class="nav-buffer">Buffer</a></li>
<li><a href="https://nodejs.org/api/addons.html" class="nav-addons">C++ Addons</a></li>
<li><a href="https://nodejs.org/api/n-api.html" class="nav-n-api">C/C++ Addons - N-API</a></li>
<li><a href="https://nodejs.org/api/child_process.html" class="nav-child_process">Child Processes</a></li>
<li><a href="https://nodejs.org/api/cluster.html" class="nav-cluster">Cluster</a></li>
<li><a href="https://nodejs.org/api/cli.html" class="nav-cli">Command Line Options</a></li>
<li><a href="https://nodejs.org/api/console.html" class="nav-console">Console</a></li>
<li><a href="https://nodejs.org/api/crypto.html" class="nav-crypto">Crypto</a></li>
<li><a href="https://nodejs.org/api/debugger.html" class="nav-debugger">Debugger</a></li>
<li><a href="https://nodejs.org/api/deprecations.html" class="nav-deprecations">Deprecated APIs</a></li>
<li><a href="https://nodejs.org/api/dns.html" class="nav-dns">DNS</a></li>
<li><a href="https://nodejs.org/api/domain.html" class="nav-domain active">Domain</a></li>
<li><a href="https://nodejs.org/api/esm.html" class="nav-esm">ECMAScript Modules</a></li>
<li><a href="https://nodejs.org/api/errors.html" class="nav-errors">Errors</a></li>
<li><a href="https://nodejs.org/api/events.html" class="nav-events">Events</a></li>
<li><a href="https://nodejs.org/api/fs.html" class="nav-fs">File System</a></li>
<li><a href="https://nodejs.org/api/globals.html" class="nav-globals">Globals</a></li>
<li><a href="https://nodejs.org/api/http.html" class="nav-http">HTTP</a></li>
<li><a href="https://nodejs.org/api/http2.html" class="nav-http2">HTTP/2</a></li>
<li><a href="https://nodejs.org/api/https.html" class="nav-https">HTTPS</a></li>
<li><a href="https://nodejs.org/api/inspector.html" class="nav-inspector">Inspector</a></li>
<li><a href="https://nodejs.org/api/intl.html" class="nav-intl">Internationalization</a></li>
<li><a href="https://nodejs.org/api/modules.html" class="nav-modules">Modules</a></li>
<li><a href="https://nodejs.org/api/net.html" class="nav-net">Net</a></li>
<li><a href="https://nodejs.org/api/os.html" class="nav-os">OS</a></li>
<li><a href="https://nodejs.org/api/path.html" class="nav-path">Path</a></li>
<li><a href="https://nodejs.org/api/perf_hooks.html" class="nav-perf_hooks">Performance Hooks</a></li>
<li><a href="https://nodejs.org/api/policy.html" class="nav-policy">Policies</a></li>
<li><a href="https://nodejs.org/api/process.html" class="nav-process">Process</a></li>
<li><a href="https://nodejs.org/api/punycode.html" class="nav-punycode">Punycode</a></li>
<li><a href="https://nodejs.org/api/querystring.html" class="nav-querystring">Query Strings</a></li>
<li><a href="https://nodejs.org/api/readline.html" class="nav-readline">Readline</a></li>
<li><a href="https://nodejs.org/api/repl.html" class="nav-repl">REPL</a></li>
<li><a href="https://nodejs.org/api/report.html" class="nav-report">Report</a></li>
<li><a href="https://nodejs.org/api/stream.html" class="nav-stream">Stream</a></li>
<li><a href="https://nodejs.org/api/string_decoder.html" class="nav-string_decoder">String Decoder</a></li>
<li><a href="https://nodejs.org/api/timers.html" class="nav-timers">Timers</a></li>
<li><a href="https://nodejs.org/api/tls.html" class="nav-tls">TLS/SSL</a></li>
<li><a href="https://nodejs.org/api/tracing.html" class="nav-tracing">Trace Events</a></li>
<li><a href="https://nodejs.org/api/tty.html" class="nav-tty">TTY</a></li>
<li><a href="https://nodejs.org/api/dgram.html" class="nav-dgram">UDP/Datagram</a></li>
<li><a href="https://nodejs.org/api/url.html" class="nav-url">URL</a></li>
<li><a href="https://nodejs.org/api/util.html" class="nav-util">Utilities</a></li>
<li><a href="https://nodejs.org/api/v8.html" class="nav-v8">V8</a></li>
<li><a href="https://nodejs.org/api/vm.html" class="nav-vm">VM</a></li>
<li><a href="https://nodejs.org/api/worker_threads.html" class="nav-worker_threads">Worker Threads</a></li>
<li><a href="https://nodejs.org/api/zlib.html" class="nav-zlib">Zlib</a></li>
</ul>
<div class="line"></div>
<ul>
<li><a href="https://github.com/nodejs/node" class="nav-https-github-com-nodejs-node">GitHub Repo &amp; Issue Tracker</a></li>
</ul>
    </div>

    <div id="column1" data-id="domain" class="interior">
      <header>
        <h1>Node.js v12.10.0 Documentation</h1>
        <div id="gtoc">
          <ul>
            <li>
              <a href="https://nodejs.org/api/index.html" name="toc">Index</a>
            </li>
            <li>
              <a href="https://nodejs.org/api/all.html">View on single page</a>
            </li>
            <li>
              <a href="https://nodejs.org/api/domain.json">View as JSON</a>
            </li>
            
    <li class="version-picker">
      <a href="#">View another version <span>▼</span></a>
      <ol class="version-picker"><li><a href="https://nodejs.org/docs/latest-v12.x/api/domain.html">12.x</a></li>
<li><a href="https://nodejs.org/docs/latest-v11.x/api/domain.html">11.x</a></li>
<li><a href="https://nodejs.org/docs/latest-v10.x/api/domain.html">10.x <b>LTS</b></a></li>
<li><a href="https://nodejs.org/docs/latest-v9.x/api/domain.html">9.x</a></li>
<li><a href="https://nodejs.org/docs/latest-v8.x/api/domain.html">8.x <b>LTS</b></a></li>
<li><a href="https://nodejs.org/docs/latest-v7.x/api/domain.html">7.x</a></li>
<li><a href="https://nodejs.org/docs/latest-v6.x/api/domain.html">6.x</a></li>
<li><a href="https://nodejs.org/docs/latest-v5.x/api/domain.html">5.x</a></li>
<li><a href="https://nodejs.org/docs/latest-v4.x/api/domain.html">4.x</a></li>
<li><a href="https://nodejs.org/docs/latest-v0.12.x/api/domain.html">0.12.x</a></li>
<li><a href="https://nodejs.org/docs/latest-v0.10.x/api/domain.html">0.10.x</a></li></ol>
    </li>
  
            <li class="edit_on_github"><a href="https://github.com/nodejs/node/edit/master/doc/api/domain.md"><span class="github_icon"><svg height="16" width="16" viewBox="0 0 16.1 16.1" fill="currentColor"><path d="M8 0a8 8 0 0 0-2.5 15.6c.4 0 .5-.2.5-.4v-1.5c-2 .4-2.5-.5-2.7-1 0-.1-.5-.9-.8-1-.3-.2-.7-.6 0-.6.6 0 1 .6 1.2.8.7 1.2 1.9 1 2.4.7 0-.5.2-.9.5-1-1.8-.3-3.7-1-3.7-4 0-.9.3-1.6.8-2.2 0-.2-.3-1 .1-2 0 0 .7-.3 2.2.7a7.4 7.4 0 0 1 4 0c1.5-1 2.2-.8 2.2-.8.5 1.1.2 2 .1 2.1.5.6.8 1.3.8 2.2 0 3-1.9 3.7-3.6 4 .3.2.5.7.5 1.4v2.2c0 .2.1.5.5.4A8 8 0 0 0 16 8a8 8 0 0 0-8-8z"></path></svg></span>Edit on GitHub</a></li>
          </ul>
        </div>
        <hr>
      </header>

      <div id="toc">
        <h2>Table of Contents</h2>
        <ul>
<li>
<p><span class="stability_0"><a href="#domain_domain">Domain</a></span></p>
<ul>
<li><a href="#domain_warning_don_t_ignore_errors">Warning: Don't Ignore Errors!</a></li>
<li><a href="#domain_additions_to_error_objects">Additions to Error objects</a></li>
<li><a href="#domain_implicit_binding">Implicit Binding</a></li>
<li><a href="#domain_explicit_binding">Explicit Binding</a></li>
<li><a href="#domain_domain_create">domain.create()</a></li>
<li>
<p><a href="#domain_class_domain">Class: Domain</a></p>
<ul>
<li><a href="#domain_domain_members">domain.members</a></li>
<li><a href="#domain_domain_add_emitter">domain.add(emitter)</a></li>
<li><a href="#domain_domain_bind_callback">domain.bind(callback)</a></li>
<li><a href="#domain_domain_enter">domain.enter()</a></li>
<li><a href="#domain_domain_exit">domain.exit()</a></li>
<li><a href="#domain_domain_intercept_callback">domain.intercept(callback)</a></li>
<li><a href="#domain_domain_remove_emitter">domain.remove(emitter)</a></li>
<li><a href="#domain_domain_run_fn_args">domain.run(fn[, ...args])</a></li>
</ul>
</li>
<li><a href="#domain_domains_and_promises">Domains and Promises</a></li>
</ul>
</li>
</ul>
      </div>

      <div id="apicontent">
        <h1>Domain<span><a class="mark" href="#domain_domain" id="domain_domain">#</a></span></h1>
<div class="api_metadata">
<details class="changelog"><summary>History</summary>
<table>
<tbody><tr><th>Version</th><th>Changes</th></tr>
<tr><td>v8.8.0</td>
<td><p>Any <code>Promise</code>s created in VM contexts no longer have a <code>.domain</code> property. Their handlers are still executed in the proper domain, however, and <code>Promise</code>s created in the main context still possess a <code>.domain</code> property.</p></td></tr>
<tr><td>v8.0.0</td>
<td><p>Handlers for <code>Promise</code>s are now invoked in the domain in which the first promise of a chain was created.</p></td></tr>
</tbody></table>
</details>
</div>

<p></p><div class="api_stability api_stability_0"><a href="https://nodejs.org/api/documentation.html#documentation_stability_index">Stability: 0</a> - Deprecated</div><p></p>
<p><strong>This module is pending deprecation</strong>. Once a replacement API has been
finalized, this module will be fully deprecated. Most end users should
<strong>not</strong> have cause to use this module. Users who absolutely must have
the functionality that domains provide may rely on it for the time being
but should expect to have to migrate to a different solution
in the future.</p>
<p>Domains provide a way to handle multiple different IO operations as a
single group. If any of the event emitters or callbacks registered to a
domain emit an <code>'error'</code> event, or throw an error, then the domain object
will be notified, rather than losing the context of the error in the
<code>process.on('uncaughtException')</code> handler, or causing the program to
exit immediately with an error code.</p>
<h2>Warning: Don't Ignore Errors!<span><a class="mark" href="#domain_warning_don_t_ignore_errors" id="domain_warning_don_t_ignore_errors">#</a></span></h2>

<p>Domain error handlers are not a substitute for closing down a
process when an error occurs.</p>
<p>By the very nature of how <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/throw"><code>throw</code></a> works in JavaScript, there is almost
never any way to safely "pick up where it left off", without leaking
references, or creating some other sort of undefined brittle state.</p>
<p>The safest way to respond to a thrown error is to shut down the
process. Of course, in a normal web server, there may be many
open connections, and it is not reasonable to abruptly shut those down
because an error was triggered by someone else.</p>
<p>The better approach is to send an error response to the request that
triggered the error, while letting the others finish in their normal
time, and stop listening for new requests in that worker.</p>
<p>In this way, <code>domain</code> usage goes hand-in-hand with the cluster module,
since the master process can fork a new worker when a worker
encounters an error. For Node.js programs that scale to multiple
machines, the terminating proxy or service registry can take note of
the failure, and react accordingly.</p>
<p>For example, this is not a good idea:</p>
<pre><code class="language-js">// XXX WARNING! BAD IDEA!

const d = require('domain').create();
d.on('error', (er) =&gt; {
  // The error won't crash the process, but what it does is worse!
  // Though we've prevented abrupt process restarting, we are leaking
  // resources like crazy if this ever happens.
  // This is no better than process.on('uncaughtException')!
  console.log(`error, but oh well ${er.message}`);
});
d.run(() =&gt; {
  require('http').createServer((req, res) =&gt; {
    handleRequest(req, res);
  }).listen(PORT);
});
</code></pre>
<p>By using the context of a domain, and the resilience of separating our
program into multiple worker processes, we can react more
appropriately, and handle errors with much greater safety.</p>
<pre><code class="language-js">// Much better!

const cluster = require('cluster');
const PORT = +process.env.PORT || 1337;

if (cluster.isMaster) {
  // A more realistic scenario would have more than 2 workers,
  // and perhaps not put the master and worker in the same file.
  //
  // It is also possible to get a bit fancier about logging, and
  // implement whatever custom logic is needed to prevent DoS
  // attacks and other bad behavior.
  //
  // See the options in the cluster documentation.
  //
  // The important thing is that the master does very little,
  // increasing our resilience to unexpected errors.

  cluster.fork();
  cluster.fork();

  cluster.on('disconnect', (worker) =&gt; {
    console.error('disconnect!');
    cluster.fork();
  });

} else {
  // the worker
  //
  // This is where we put our bugs!

  const domain = require('domain');

  // See the cluster documentation for more details about using
  // worker processes to serve requests. How it works, caveats, etc.

  const server = require('http').createServer((req, res) =&gt; {
    const d = domain.create();
    d.on('error', (er) =&gt; {
      console.error(`error ${er.stack}`);

      // We're in dangerous territory!
      // By definition, something unexpected occurred,
      // which we probably didn't want.
      // Anything can happen now! Be very careful!

      try {
        // Make sure we close down within 30 seconds
        const killtimer = setTimeout(() =&gt; {
          process.exit(1);
        }, 30000);
        // But don't keep the process open just for that!
        killtimer.unref();

        // Stop taking new requests.
        server.close();

        // Let the master know we're dead. This will trigger a
        // 'disconnect' in the cluster master, and then it will fork
        // a new worker.
        cluster.worker.disconnect();

        // Try to send an error to the request that triggered the problem
        res.statusCode = 500;
        res.setHeader('content-type', 'text/plain');
        res.end('Oops, there was a problem!\n');
      } catch (er2) {
        // Oh well, not much we can do at this point.
        console.error(`Error sending 500! ${er2.stack}`);
      }
    });

    // Because req and res were created before this domain existed,
    // we need to explicitly add them.
    // See the explanation of implicit vs explicit binding below.
    d.add(req);
    d.add(res);

    // Now run the handler function in the domain.
    d.run(() =&gt; {
      handleRequest(req, res);
    });
  });
  server.listen(PORT);
}

// This part is not important. Just an example routing thing.
// Put fancy application logic here.
function handleRequest(req, res) {
  switch (req.url) {
    case '/error':
      // We do some async stuff, and then...
      setTimeout(() =&gt; {
        // Whoops!
        flerb.bark();
      }, timeout);
      break;
    default:
      res.end('ok');
  }
}
</code></pre>
<h2>Additions to Error objects<span><a class="mark" href="#domain_additions_to_error_objects" id="domain_additions_to_error_objects">#</a></span></h2>

<p>Any time an <code>Error</code> object is routed through a domain, a few extra fields
are added to it.</p>
<ul>
<li><code>error.domain</code> The domain that first handled the error.</li>
<li><code>error.domainEmitter</code> The event emitter that emitted an <code>'error'</code> event
with the error object.</li>
<li><code>error.domainBound</code> The callback function which was bound to the
domain, and passed an error as its first argument.</li>
<li><code>error.domainThrown</code> A boolean indicating whether the error was
thrown, emitted, or passed to a bound callback function.</li>
</ul>
<h2>Implicit Binding<span><a class="mark" href="#domain_implicit_binding" id="domain_implicit_binding">#</a></span></h2>

<p>If domains are in use, then all <strong>new</strong> <code>EventEmitter</code> objects (including
Stream objects, requests, responses, etc.) will be implicitly bound to
the active domain at the time of their creation.</p>
<p>Additionally, callbacks passed to lowlevel event loop requests (such as
to <code>fs.open()</code>, or other callback-taking methods) will automatically be
bound to the active domain. If they throw, then the domain will catch
the error.</p>
<p>In order to prevent excessive memory usage, <code>Domain</code> objects themselves
are not implicitly added as children of the active domain. If they
were, then it would be too easy to prevent request and response objects
from being properly garbage collected.</p>
<p>To nest <code>Domain</code> objects as children of a parent <code>Domain</code> they must be
explicitly added.</p>
<p>Implicit binding routes thrown errors and <code>'error'</code> events to the
<code>Domain</code>'s <code>'error'</code> event, but does not register the <code>EventEmitter</code> on the
<code>Domain</code>.
Implicit binding only takes care of thrown errors and <code>'error'</code> events.</p>
<h2>Explicit Binding<span><a class="mark" href="#domain_explicit_binding" id="domain_explicit_binding">#</a></span></h2>

<p>Sometimes, the domain in use is not the one that ought to be used for a
specific event emitter. Or, the event emitter could have been created
in the context of one domain, but ought to instead be bound to some
other domain.</p>
<p>For example, there could be one domain in use for an HTTP server, but
perhaps we would like to have a separate domain to use for each request.</p>
<p>That is possible via explicit binding.</p>
<pre><code class="language-js">// Create a top-level domain for the server
const domain = require('domain');
const http = require('http');
const serverDomain = domain.create();

serverDomain.run(() =&gt; {
  // Server is created in the scope of serverDomain
  http.createServer((req, res) =&gt; {
    // Req and res are also created in the scope of serverDomain
    // however, we'd prefer to have a separate domain for each request.
    // create it first thing, and add req and res to it.
    const reqd = domain.create();
    reqd.add(req);
    reqd.add(res);
    reqd.on('error', (er) =&gt; {
      console.error('Error', er, req.url);
      try {
        res.writeHead(500);
        res.end('Error occurred, sorry.');
      } catch (er2) {
        console.error('Error sending 500', er2, req.url);
      }
    });
  }).listen(1337);
});
</code></pre>
<h2>domain.create()<span><a class="mark" href="#domain_domain_create" id="domain_domain_create">#</a></span></h2>
<ul>
<li>Returns: <a href="https://nodejs.org/api/domain.html#domain_class_domain" class="type">&lt;Domain&gt;</a></li>
</ul>
<h2>Class: Domain<span><a class="mark" href="#domain_class_domain" id="domain_class_domain">#</a></span></h2>
<ul>
<li>Extends: <a href="https://nodejs.org/api/events.html#events_class_eventemitter" class="type">&lt;EventEmitter&gt;</a></li>
</ul>
<p>The <code>Domain</code> class encapsulates the functionality of routing errors and
uncaught exceptions to the active <code>Domain</code> object.</p>
<p>To handle the errors that it catches, listen to its <code>'error'</code> event.</p>
<h3>domain.members<span><a class="mark" href="#domain_domain_members" id="domain_domain_members">#</a></span></h3>
<ul>
<li><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array" class="type">&lt;Array&gt;</a></li>
</ul>
<p>An array of timers and event emitters that have been explicitly added
to the domain.</p>
<h3>domain.add(emitter)<span><a class="mark" href="#domain_domain_add_emitter" id="domain_domain_add_emitter">#</a></span></h3>
<ul>
<li><code>emitter</code> <a href="https://nodejs.org/api/events.html#events_class_eventemitter" class="type">&lt;EventEmitter&gt;</a> | <a href="https://nodejs.org/api/timers.html#timers_timers" class="type">&lt;Timer&gt;</a> emitter or timer to be added to the domain</li>
</ul>
<p>Explicitly adds an emitter to the domain. If any event handlers called by
the emitter throw an error, or if the emitter emits an <code>'error'</code> event, it
will be routed to the domain's <code>'error'</code> event, just like with implicit
binding.</p>
<p>This also works with timers that are returned from <a href="https://nodejs.org/api/timers.html#timers_setinterval_callback_delay_args"><code>setInterval()</code></a> and
<a href="https://nodejs.org/api/timers.html#timers_settimeout_callback_delay_args"><code>setTimeout()</code></a>. If their callback function throws, it will be caught by
the domain <code>'error'</code> handler.</p>
<p>If the Timer or <code>EventEmitter</code> was already bound to a domain, it is removed
from that one, and bound to this one instead.</p>
<h3>domain.bind(callback)<span><a class="mark" href="#domain_domain_bind_callback" id="domain_domain_bind_callback">#</a></span></h3>
<ul>
<li><code>callback</code> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function" class="type">&lt;Function&gt;</a> The callback function</li>
<li>Returns: <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function" class="type">&lt;Function&gt;</a> The bound function</li>
</ul>
<p>The returned function will be a wrapper around the supplied callback
function. When the returned function is called, any errors that are
thrown will be routed to the domain's <code>'error'</code> event.</p>
<pre><code class="language-js">const d = domain.create();

function readSomeFile(filename, cb) {
  fs.readFile(filename, 'utf8', d.bind((er, data) =&gt; {
    // If this throws, it will also be passed to the domain.
    return cb(er, data ? JSON.parse(data) : null);
  }));
}

d.on('error', (er) =&gt; {
  // An error occurred somewhere. If we throw it now, it will crash the program
  // with the normal line number and stack message.
});
</code></pre>
<h3>domain.enter()<span><a class="mark" href="#domain_domain_enter" id="domain_domain_enter">#</a></span></h3>
<p>The <code>enter()</code> method is plumbing used by the <code>run()</code>, <code>bind()</code>, and
<code>intercept()</code> methods to set the active domain. It sets <code>domain.active</code> and
<code>process.domain</code> to the domain, and implicitly pushes the domain onto the domain
stack managed by the domain module (see <a href="#domain_domain_exit"><code>domain.exit()</code></a> for details on the
domain stack). The call to <code>enter()</code> delimits the beginning of a chain of
asynchronous calls and I/O operations bound to a domain.</p>
<p>Calling <code>enter()</code> changes only the active domain, and does not alter the domain
itself. <code>enter()</code> and <code>exit()</code> can be called an arbitrary number of times on a
single domain.</p>
<h3>domain.exit()<span><a class="mark" href="#domain_domain_exit" id="domain_domain_exit">#</a></span></h3>
<p>The <code>exit()</code> method exits the current domain, popping it off the domain stack.
Any time execution is going to switch to the context of a different chain of
asynchronous calls, it's important to ensure that the current domain is exited.
The call to <code>exit()</code> delimits either the end of or an interruption to the chain
of asynchronous calls and I/O operations bound to a domain.</p>
<p>If there are multiple, nested domains bound to the current execution context,
<code>exit()</code> will exit any domains nested within this domain.</p>
<p>Calling <code>exit()</code> changes only the active domain, and does not alter the domain
itself. <code>enter()</code> and <code>exit()</code> can be called an arbitrary number of times on a
single domain.</p>
<h3>domain.intercept(callback)<span><a class="mark" href="#domain_domain_intercept_callback" id="domain_domain_intercept_callback">#</a></span></h3>
<ul>
<li><code>callback</code> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function" class="type">&lt;Function&gt;</a> The callback function</li>
<li>Returns: <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function" class="type">&lt;Function&gt;</a> The intercepted function</li>
</ul>
<p>This method is almost identical to <a href="#domain_domain_bind_callback"><code>domain.bind(callback)</code></a>. However, in
addition to catching thrown errors, it will also intercept <a href="https://nodejs.org/api/errors.html#errors_class_error"><code>Error</code></a>
objects sent as the first argument to the function.</p>
<p>In this way, the common <code>if (err) return callback(err);</code> pattern can be replaced
with a single error handler in a single place.</p>
<pre><code class="language-js">const d = domain.create();

function readSomeFile(filename, cb) {
  fs.readFile(filename, 'utf8', d.intercept((data) =&gt; {
    // Note, the first argument is never passed to the
    // callback since it is assumed to be the 'Error' argument
    // and thus intercepted by the domain.

    // If this throws, it will also be passed to the domain
    // so the error-handling logic can be moved to the 'error'
    // event on the domain instead of being repeated throughout
    // the program.
    return cb(null, JSON.parse(data));
  }));
}

d.on('error', (er) =&gt; {
  // An error occurred somewhere. If we throw it now, it will crash the program
  // with the normal line number and stack message.
});
</code></pre>
<h3>domain.remove(emitter)<span><a class="mark" href="#domain_domain_remove_emitter" id="domain_domain_remove_emitter">#</a></span></h3>
<ul>
<li><code>emitter</code> <a href="https://nodejs.org/api/events.html#events_class_eventemitter" class="type">&lt;EventEmitter&gt;</a> | <a href="https://nodejs.org/api/timers.html#timers_timers" class="type">&lt;Timer&gt;</a> emitter or timer to be removed from the domain</li>
</ul>
<p>The opposite of <a href="#domain_domain_add_emitter"><code>domain.add(emitter)</code></a>. Removes domain handling from the
specified emitter.</p>
<h3>domain.run(fn[, ...args])<span><a class="mark" href="#domain_domain_run_fn_args" id="domain_domain_run_fn_args">#</a></span></h3>
<ul>
<li><code>fn</code> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function" class="type">&lt;Function&gt;</a></li>
<li><code>...args</code> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Data_types" class="type">&lt;any&gt;</a></li>
</ul>
<p>Run the supplied function in the context of the domain, implicitly
binding all event emitters, timers, and lowlevel requests that are
created in that context. Optionally, arguments can be passed to
the function.</p>
<p>This is the most basic way to use a domain.</p>
<pre><code class="language-js">const domain = require('domain');
const fs = require('fs');
const d = domain.create();
d.on('error', (er) =&gt; {
  console.error('Caught error!', er);
});
d.run(() =&gt; {
  process.nextTick(() =&gt; {
    setTimeout(() =&gt; { // Simulating some various async stuff
      fs.open('non-existent file', 'r', (er, fd) =&gt; {
        if (er) throw er;
        // proceed...
      });
    }, 100);
  });
});
</code></pre>
<p>In this example, the <code>d.on('error')</code> handler will be triggered, rather
than crashing the program.</p>
<h2>Domains and Promises<span><a class="mark" href="#domain_domains_and_promises" id="domain_domains_and_promises">#</a></span></h2>
<p>As of Node.js 8.0.0, the handlers of Promises are run inside the domain in
which the call to <code>.then()</code> or <code>.catch()</code> itself was made:</p>
<pre><code class="language-js">const d1 = domain.create();
const d2 = domain.create();

let p;
d1.run(() =&gt; {
  p = Promise.resolve(42);
});

d2.run(() =&gt; {
  p.then((v) =&gt; {
    // running in d2
  });
});
</code></pre>
<p>A callback may be bound to a specific domain using <a href="#domain_domain_bind_callback"><code>domain.bind(callback)</code></a>:</p>
<pre><code class="language-js">const d1 = domain.create();
const d2 = domain.create();

let p;
d1.run(() =&gt; {
  p = Promise.resolve(42);
});

d2.run(() =&gt; {
  p.then(p.domain.bind((v) =&gt; {
    // running in d1
  }));
});
</code></pre>
<p>Domains will not interfere with the error handling mechanisms for
Promises. In other words, no <code>'error'</code> event will be emitted for unhandled
<code>Promise</code> rejections.</p>
      </div>
    </div>
  </div>
  <script src="data:application/javascript;base64,/*
SHJS - Syntax Highlighting in JavaScript
Copyright (C) 2007, 2008 gnombat@users.sourceforge.net
License: http://shjs.sourceforge.net/doc/gplv3.html
*/

if (! this.sh_languages) {
  this.sh_languages = {};
}
var sh_requests = {};

function sh_isEmailAddress(url) {
  if (/^mailto:/.test(url)) {
    return false;
  }
  return url.indexOf('@') !== -1;
}

function sh_setHref(tags, numTags, inputString) {
  var url = inputString.substring(tags[numTags - 2].pos, tags[numTags - 1].pos);
  if (url.length >= 2 && url.charAt(0) === '<' && url.charAt(url.length - 1) === '>') {
    url = url.substr(1, url.length - 2);
  }
  if (sh_isEmailAddress(url)) {
    url = 'mailto:' + url;
  }
  tags[numTags - 2].node.href = url;
}

/*
Konqueror has a bug where the regular expression /$/g will not match at the end
of a line more than once:

  var regex = /$/g;
  var match;

  var line = '1234567890';
  regex.lastIndex = 10;
  match = regex.exec(line);

  var line2 = 'abcde';
  regex.lastIndex = 5;
  match = regex.exec(line2);  // fails
*/
function sh_konquerorExec(s) {
  var result = [''];
  result.index = s.length;
  result.input = s;
  return result;
}

/**
Highlights all elements containing source code in a text string.  The return
value is an array of objects, each representing an HTML start or end tag.  Each
object has a property named pos, which is an integer representing the text
offset of the tag. Every start tag also has a property named node, which is the
DOM element started by the tag. End tags do not have this property.
@param  inputString  a text string
@param  language  a language definition object
@return  an array of tag objects
*/
function sh_highlightString(inputString, language) {
  if (/Konqueror/.test(navigator.userAgent)) {
    if (! language.konquered) {
      for (var s = 0; s < language.length; s++) {
        for (var p = 0; p < language[s].length; p++) {
          var r = language[s][p][0];
          if (r.source === '$') {
            r.exec = sh_konquerorExec;
          }
        }
      }
      language.konquered = true;
    }
  }

  var a = document.createElement('a');
  var span = document.createElement('span');

  // the result
  var tags = [];
  var numTags = 0;

  // each element is a pattern object from language
  var patternStack = [];

  // the current position within inputString
  var pos = 0;

  // the name of the current style, or null if there is no current style
  var currentStyle = null;

  var output = function(s, style) {
    var length = s.length;
    // this is more than just an optimization - we don't want to output empty <span></span> elements
    if (length === 0) {
      return;
    }
    if (! style) {
      var stackLength = patternStack.length;
      if (stackLength !== 0) {
        var pattern = patternStack[stackLength - 1];
        // check whether this is a state or an environment
        if (! pattern[3]) {
          // it's not a state - it's an environment; use the style for this environment
          style = pattern[1];
        }
      }
    }
    if (currentStyle !== style) {
      if (currentStyle) {
        tags[numTags++] = {pos: pos};
        if (currentStyle === 'sh_url') {
          sh_setHref(tags, numTags, inputString);
        }
      }
      if (style) {
        var clone;
        if (style === 'sh_url') {
          clone = a.cloneNode(false);
        }
        else {
          clone = span.cloneNode(false);
        }
        clone.className = style;
        tags[numTags++] = {node: clone, pos: pos};
      }
    }
    pos += length;
    currentStyle = style;
  };

  var endOfLinePattern = /\r\n|\r|\n/g;
  endOfLinePattern.lastIndex = 0;
  var inputStringLength = inputString.length;
  while (pos < inputStringLength) {
    var start = pos;
    var end;
    var startOfNextLine;
    var endOfLineMatch = endOfLinePattern.exec(inputString);
    if (endOfLineMatch === null) {
      end = inputStringLength;
      startOfNextLine = inputStringLength;
    }
    else {
      end = endOfLineMatch.index;
      startOfNextLine = endOfLinePattern.lastIndex;
    }

    var line = inputString.substring(start, end);

    var matchCache = [];
    for (;;) {
      var posWithinLine = pos - start;

      var stateIndex;
      var stackLength = patternStack.length;
      if (stackLength === 0) {
        stateIndex = 0;
      }
      else {
        // get the next state
        stateIndex = patternStack[stackLength - 1][2];
      }

      var state = language[stateIndex];
      var numPatterns = state.length;
      var mc = matchCache[stateIndex];
      if (! mc) {
        mc = matchCache[stateIndex] = [];
      }
      var bestMatch = null;
      var bestPatternIndex = -1;
      for (var i = 0; i < numPatterns; i++) {
        var match;
        if (i < mc.length && (mc[i] === null || posWithinLine <= mc[i].index)) {
          match = mc[i];
        }
        else {
          var regex = state[i][0];
          regex.lastIndex = posWithinLine;
          match = regex.exec(line);
          mc[i] = match;
        }
        if (match !== null && (bestMatch === null || match.index < bestMatch.index)) {
          bestMatch = match;
          bestPatternIndex = i;
          if (match.index === posWithinLine) {
            break;
          }
        }
      }

      if (bestMatch === null) {
        output(line.substring(posWithinLine), null);
        break;
      }
      else {
        // got a match
        if (bestMatch.index > posWithinLine) {
          output(line.substring(posWithinLine, bestMatch.index), null);
        }

        var pattern = state[bestPatternIndex];

        var newStyle = pattern[1];
        var matchedString;
        if (newStyle instanceof Array) {
          for (var subexpression = 0; subexpression < newStyle.length; subexpression++) {
            matchedString = bestMatch[subexpression + 1];
            output(matchedString, newStyle[subexpression]);
          }
        }
        else {
          matchedString = bestMatch[0];
          output(matchedString, newStyle);
        }

        switch (pattern[2]) {
        case -1:
          // do nothing
          break;
        case -2:
          // exit
          patternStack.pop();
          break;
        case -3:
          // exitall
          patternStack.length = 0;
          break;
        default:
          // this was the start of a delimited pattern or a state/environment
          patternStack.push(pattern);
          break;
        }
      }
    }

    // end of the line
    if (currentStyle) {
      tags[numTags++] = {pos: pos};
      if (currentStyle === 'sh_url') {
        sh_setHref(tags, numTags, inputString);
      }
      currentStyle = null;
    }
    pos = startOfNextLine;
  }

  return tags;
}

////////////////////////////////////////////////////////////////////////////////
// DOM-dependent functions

function sh_getClasses(element) {
  var result = [];
  var htmlClass = element.className;
  if (htmlClass && htmlClass.length > 0) {
    var htmlClasses = htmlClass.split(' ');
    for (var i = 0; i < htmlClasses.length; i++) {
      if (htmlClasses[i].length > 0) {
        result.push(htmlClasses[i]);
      }
    }
  }
  return result;
}

function sh_addClass(element, name) {
  var htmlClasses = sh_getClasses(element);
  for (var i = 0; i < htmlClasses.length; i++) {
    if (name.toLowerCase() === htmlClasses[i].toLowerCase()) {
      return;
    }
  }
  htmlClasses.push(name);
  element.className = htmlClasses.join(' ');
}

/**
Extracts the tags from an HTML DOM NodeList.
@param  nodeList  a DOM NodeList
@param  result  an object with text, tags and pos properties
*/
function sh_extractTagsFromNodeList(nodeList, result) {
  var length = nodeList.length;
  for (var i = 0; i < length; i++) {
    var node = nodeList.item(i);
    switch (node.nodeType) {
    case 1:
      if (node.nodeName.toLowerCase() === 'br') {
        var terminator;
        if (/MSIE/.test(navigator.userAgent)) {
          terminator = '\r';
        }
        else {
          terminator = '\n';
        }
        result.text.push(terminator);
        result.pos++;
      }
      else {
        result.tags.push({node: node.cloneNode(false), pos: result.pos});
        sh_extractTagsFromNodeList(node.childNodes, result);
        result.tags.push({pos: result.pos});
      }
      break;
    case 3:
    case 4:
      result.text.push(node.data);
      result.pos += node.length;
      break;
    }
  }
}

/**
Extracts the tags from the text of an HTML element. The extracted tags will be
returned as an array of tag objects. See sh_highlightString for the format of
the tag objects.
@param  element  a DOM element
@param  tags  an empty array; the extracted tag objects will be returned in it
@return  the text of the element
@see  sh_highlightString
*/
function sh_extractTags(element, tags) {
  var result = {};
  result.text = [];
  result.tags = tags;
  result.pos = 0;
  sh_extractTagsFromNodeList(element.childNodes, result);
  return result.text.join('');
}

/**
Merges the original tags from an element with the tags produced by highlighting.
@param  originalTags  an array containing the original tags
@param  highlightTags  an array containing the highlighting tags - these must not overlap
@result  an array containing the merged tags
*/
function sh_mergeTags(originalTags, highlightTags) {
  var numOriginalTags = originalTags.length;
  if (numOriginalTags === 0) {
    return highlightTags;
  }

  var numHighlightTags = highlightTags.length;
  if (numHighlightTags === 0) {
    return originalTags;
  }

  var result = [];
  var originalIndex = 0;
  var highlightIndex = 0;

  while (originalIndex < numOriginalTags && highlightIndex < numHighlightTags) {
    var originalTag = originalTags[originalIndex];
    var highlightTag = highlightTags[highlightIndex];

    if (originalTag.pos <= highlightTag.pos) {
      result.push(originalTag);
      originalIndex++;
    }
    else {
      result.push(highlightTag);
      if (highlightTags[highlightIndex + 1].pos <= originalTag.pos) {
        highlightIndex++;
        result.push(highlightTags[highlightIndex]);
        highlightIndex++;
      }
      else {
        // new end tag
        result.push({pos: originalTag.pos});

        // new start tag
        highlightTags[highlightIndex] = {node: highlightTag.node.cloneNode(false), pos: originalTag.pos};
      }
    }
  }

  while (originalIndex < numOriginalTags) {
    result.push(originalTags[originalIndex]);
    originalIndex++;
  }

  while (highlightIndex < numHighlightTags) {
    result.push(highlightTags[highlightIndex]);
    highlightIndex++;
  }

  return result;
}

/**
Inserts tags into text.
@param  tags  an array of tag objects
@param  text  a string representing the text
@return  a DOM DocumentFragment representing the resulting HTML
*/
function sh_insertTags(tags, text) {
  var doc = document;

  var result = document.createDocumentFragment();
  var tagIndex = 0;
  var numTags = tags.length;
  var textPos = 0;
  var textLength = text.length;
  var currentNode = result;

  // output one tag or text node every iteration
  while (textPos < textLength || tagIndex < numTags) {
    var tag;
    var tagPos;
    if (tagIndex < numTags) {
      tag = tags[tagIndex];
      tagPos = tag.pos;
    }
    else {
      tagPos = textLength;
    }

    if (tagPos <= textPos) {
      // output the tag
      if (tag.node) {
        // start tag
        var newNode = tag.node;
        currentNode.appendChild(newNode);
        currentNode = newNode;
      }
      else {
        // end tag
        currentNode = currentNode.parentNode;
      }
      tagIndex++;
    }
    else {
      // output text
      currentNode.appendChild(doc.createTextNode(text.substring(textPos, tagPos)));
      textPos = tagPos;
    }
  }

  return result;
}

/**
Highlights an element containing source code.  Upon completion of this function,
the element will have been placed in the "sh_sourceCode" class.
@param  element  a DOM <pre> element containing the source code to be highlighted
@param  language  a language definition object
*/
function sh_highlightElement(element, language) {
  sh_addClass(element, 'sh_sourceCode');
  var originalTags = [];
  var inputString = sh_extractTags(element, originalTags);
  var highlightTags = sh_highlightString(inputString, language);
  var tags = sh_mergeTags(originalTags, highlightTags);
  var documentFragment = sh_insertTags(tags, inputString);
  while (element.hasChildNodes()) {
    element.removeChild(element.firstChild);
  }
  element.appendChild(documentFragment);
}

function sh_getXMLHttpRequest() {
  if (window.ActiveXObject) {
    return new ActiveXObject('Msxml2.XMLHTTP');
  }
  else if (window.XMLHttpRequest) {
    return new XMLHttpRequest();
  }
  throw 'No XMLHttpRequest implementation available';
}

function sh_load(language, element, prefix, suffix) {
  if (language in sh_requests) {
    sh_requests[language].push(element);
    return;
  }
  sh_requests[language] = [element];
  var request = sh_getXMLHttpRequest();
  var url = prefix + 'sh_' + language + suffix;
  request.open('GET', url, true);
  request.onreadystatechange = function () {
    if (request.readyState === 4) {
      try {
        if (! request.status || request.status === 200) {
          eval(request.responseText);
          var elements = sh_requests[language];
          for (var i = 0; i < elements.length; i++) {
            sh_highlightElement(elements[i], sh_languages[language]);
          }
        }
        else {
          throw 'HTTP error: status ' + request.status;
        }
      }
      finally {
        request = null;
      }
    }
  };
  request.send(null);
}

/**
Highlights all elements containing source code on the current page. Elements
containing source code must be "pre" elements with a "class" attribute of
"sh_LANGUAGE", where LANGUAGE is a valid language identifier; e.g., "sh_java"
identifies the element as containing "java" language source code.
*/
function highlight(prefix, suffix, tag) {
  var nodeList = document.getElementsByTagName(tag);
  for (var i = 0; i < nodeList.length; i++) {
    var element = nodeList.item(i);
    var htmlClasses = sh_getClasses(element);
    var highlighted = false;
    var donthighlight = false;
    for (var j = 0; j < htmlClasses.length; j++) {
      var htmlClass = htmlClasses[j].toLowerCase();
      if (htmlClass === 'sh_none') {
        donthighlight = true
        continue;
      }
      if (htmlClass.substr(0, 3) === 'sh_') {
        var language = htmlClass.substring(3);
        if (language in sh_languages) {
          sh_highlightElement(element, sh_languages[language]);
          highlighted = true;
        }
        else if (typeof(prefix) === 'string' && typeof(suffix) === 'string') {
          sh_load(language, element, prefix, suffix);
        }
        else {
          throw 'Found <' + tag + '> element with class="' + htmlClass + '", but no such language exists';
        }
        break;
      }
    }
    if (highlighted === false && donthighlight == false) {
      sh_highlightElement(element, sh_languages["javascript"]);
    }
  }
}



function sh_highlightDocument(prefix, suffix) {
  highlight(prefix, suffix, 'tt');
  highlight(prefix, suffix, 'code');
  highlight(prefix, suffix, 'pre');
}
"></script>
  <script src="data:application/javascript;base64,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"></script>
  <script>highlight(undefined, undefined, 'pre');</script>


</body></html>